farfli | 486ac289868b08410fc761364149110c4ed9232930439f1403df1e3cefdc94b4

Analysis

max time kernel
150s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
14/08/2026, 12:18

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General

Target
2026-08-14_e0b98c169e9fe94e6a38410de4a802bd_elex_wannacry.exe
Size 100KB
Sample260814-pgsgrssfra
SHA256 486ac289868b08410fc761364149110c4ed9232930439f1403df1e3cefdc94b4
MD5 e0b98c169e9fe94e6a38410de4a802bd
SHA1 23e49c51bf9de2aa4a916c5999cea98a75524e98
SHA512 43a4293122b56a4583730a35c393fe28d5a09761d13ec379715a61e5c4aa50d56913dac93cc61cda96db3ad4151eb678ea804e6f1d90a2c7ca3486ad9261a53d
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmy0:uLRrO10TiJD9yjqrilyxOuP0
TLSH
T15DA37B1C6962C59EE4015F74430B922097A2AC18FA345F335384BB4EFF36E1BEDA91D8
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer

Malware Config

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli

Detects Farfli Backdoor 3 IoCs

resource	yara_rule
behavioral2/memory/5244-11-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/5244-14-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/5244-15-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/5244-11-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5244-14-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5244-15-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 8 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
3	5244	rundll32.exe
4	5244	rundll32.exe
5	5244	rundll32.exe
9	5244	rundll32.exe
10	5244	rundll32.exe
16	5244	rundll32.exe
18	5244	rundll32.exe
19	5244	rundll32.exe

Deletes itself 1 IoCs

pid	Process
6388	ahsjs.exe

Executes dropped EXE 1 IoCs

pid	Process
6388	ahsjs.exe

Loads dropped DLL 1 IoCs

pid	Process
5244	rundll32.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1014449518-1831897916-4205727055-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\ieqgp\\ktdnw.dll\",QueryPluginInterface"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5248	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ahsjs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-14_e0b98c169e9fe94e6a38410de4a802bd_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
5328	PING.EXE
5248	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5328	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5244	rundll32.exe
5244	rundll32.exe
5244	rundll32.exe
5244	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5244	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1848	2026-08-14_e0b98c169e9fe94e6a38410de4a802bd_elex_wannacry.exe
6388	ahsjs.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 5248	1848	2026-08-14_e0b98c169e9fe94e6a38410de4a802bd_elex_wannacry.exe	91
PID 5248 wrote to memory of 5328	5248	cmd.exe	93
PID 5248 wrote to memory of 6388	5248	cmd.exe	94
PID 6388 wrote to memory of 5244	6388	ahsjs.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-08-14_e0b98c169e9fe94e6a38410de4a802bd_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-14_e0b98c169e9fe94e6a38410de4a802bd_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ahsjs.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-14_e0b98c169e9fe94e6a38410de4a802bd_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5248
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:5328
- - C:\Users\Admin\AppData\Local\Temp\ahsjs.exe
    C:\Users\Admin\AppData\Local\Temp\\ahsjs.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-14_e0b98c169e9fe94e6a38410de4a802bd_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:6388
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ieqgp\ktdnw.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\ahsjs.exe
      4⤵
      Badlisted process makes network request
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:5244

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

ahsjs.exe

Path C:\Users\Admin\AppData\Local\Temp\ahsjs.exe
Size 100KB
SHA256 6dff3cde25b83ef42ab404a77ab32168ff1e08ca290dab7c991753baba0308de
MD5 d9911180560f83c02d7acfa15398e699
SHA1 47951707fe50c72ff5b693958b37fd6962a47999
SHA512 3b03c3ffdfedf131c98a6611e9cb5d8cfd69097740ec7be572c75455426da55fe72887d0635cea1c54f7817e6320d537ba4312db759e66f7505f76a871ece2ef
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyf:uLRrO10TiJD9yjqrilyxOuPf
TLSH
T168A37B1C6962C59EE4015F74430B962097A2AC18FA345F335384BB4EFF36E1BEDA91D8
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ktdnw.dll

Path \??\c:\ieqgp\ktdnw.dll
Size 44KB
SHA256 9111c1eb1f0b59dcd49cfd5a0abc0ba100ac59a3bcae8623ff091dfdc46fed3c
MD5 0f12a7d509b2c9bb9b4cd6d8a0325e86
SHA1 f5fb59ad4f0633d115b06f35a2dc161dc4367157
SHA512 e3c84a643ff0a2627daba8a056221985a472aaf07bade61b3e9459db4bfc8792c1347606911e3fcc01581508004b18b5435bcccd5e7617cc6d091f37a5f42e7f
SSDEEP 768:DICzePjle2367kjhrXLdCuYMW8QVnwrLDGe/brbtJyOTuXfADVjeJ2i/MVJWAE:DDePjA23Ukjh37YMonwrvGybrbbRCf4E
TLSH
T1FD23F1A7B94E8D4FC0AE41F7078FC8D422B5589A97A7CB4626008F216CC4FB07E52376
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1848-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/1848-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/5244-9-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/5244-10-0x0000000001650000-0x0000000001652000-memory.dmp

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memory/5244-11-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/5244-12-0x0000000001650000-0x0000000001652000-memory.dmp

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memory/5244-14-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/5244-15-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/6388-6-0x0000000000400000-0x0000000000417000-memory.dmp

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